Patent GB-893605-A (GB)
Title: Process for preparing polyolefin textile fibres
IPC: D01F1/10
Filed: 1960-06-07
Abstract: Fibres are spun from a melt comprising one or more crystalline poly-alpha-olefins in admixture with one or more dicarboxylic acids or dicarboxylic acid derivatives.  Alpha-olefins are defined as being of the general formula R - CH = CH2, where R is an alkyl, cycloalkyl, cycloalkenyl or aryl group.  Preferably the polyalpha-olefin is polypropylene, and the proportion of poly-alpha-olefin is 75-98,9% by weight, based on the weight of the mix.  Preferred dicarboxylic acids and derivatives include succinic, sebacic, adipic, azelaic, glutaric, pimelic, suberic, nonandicarboxylic, decandicarboxylic, fumaric, maleic and phthalic acids and maleic and phthalic anhydrides.  The melt may also contain 0,1-5% by weight of a solid dispersant, as for example cetyl and stearyl alcohols, stearic acid, benzoin, furoin, vinyl stearate, mono-, di, and tri-stearic esters of glycerol, mono-ethanolamine stearate, stearic acid amide, N-diethanol-lauramide C6-C30 aliphatic amines, condensation products of ethylene oxide with alcohols, with amines and with phenols, polyacrylonitrile and terpene polymers.  The fibres may be stretched to a draw ratio of 1:2 to 1:10 at from 80 DEG -150 DEG C.  The fibres have an enhanced receptivity for dispersed acetate and basic dyes and, if treated with an amine or imine, suitably with the anhydrous compound or in hot (generally aqueous) solution for from a few seconds to 2-3 hours, for acid dyes. Specified amines and imines include ethylenediamine, propylene-diamine, hexamethylene-diamine, diethylene-triamine, tetraethylene pentamine, ethylene imine, polyethylene imine, 3-diethylene-aminopropyl amine, tetramethylene diamine and cyclohexylamine.  Specifications 850,471, 866,920, 873,830, 878,523, 893,603 and 893,604 are referred to.ALSO:Fibres spun from a melt comprising one or more crystalline poly-alpha-olefins, preferably polypropylene, in admixture with one or more dicarboxylic acids or dicarboxylic acid derivatives, generally in a proportion of 1%-25% by weight, are dyed with dispersed acetate and basic dyes.\sW Receptivity for acid dyes is enhanced by treating the fibres with an amine or imine, suitably with the anhydrous compound or in hot (generally aqueous) solution, for from a few seconds to 2-3 hours. Specified amines and imines include ethylene-diamine, propylenediamine. hexamethylene - diamine, diethylene - triamine, tetraethylene - pentamine, ethylene - imine, polyethylene imine, 3-diethylene-aminopropylamine, tetramethylene-diamine and cyclohexylamine.  \sWAlpha olefins are defined as being of the general formula R-CH=CH2, where R is an alkyl, cycloalkyl, cycloalkenyl or aryl group.  The melt may also contain 0.1%-5% by weight of a solid dispersant as for example cetyl and stearyl alcohols, stearic acid, benzoin, furoin, vinyl stearate, mono-, di-, and tri-stearic esters of glycerol, mono-ethanolamine stearate, stearic acid amide, N-diethanol-lauramide, C6-C30 aliphatic amines, condensation products of ethylene oxide with alcohols, with amines and with phenols, polyacrylonitrile and terpene polymers.  Preferred dicarboxylic acids and derivatives include succinic, sebacic, adipic, azelaic, glutaric, pimelic, suberic, nonandicarboxylic, decandicarboxylic, fumaric, maleic and phthalic acids and maleic and phthalic anhydrides.  Specifications 850,471, 866,920, 873,830, 878,523, 893,603 and 893,604 are referred to.